CN114188972A - Offshore wind power nuclear energy complementary operation system and method - Google Patents
Offshore wind power nuclear energy complementary operation system and method Download PDFInfo
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- CN114188972A CN114188972A CN202111365399.XA CN202111365399A CN114188972A CN 114188972 A CN114188972 A CN 114188972A CN 202111365399 A CN202111365399 A CN 202111365399A CN 114188972 A CN114188972 A CN 114188972A
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- offshore wind
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D1/00—Details of nuclear power plant
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/28—The renewable source being wind energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
Abstract
The invention provides an offshore wind power nuclear power complementary system and an operation method thereof, wherein the system comprises the following steps: the offshore wind farm provides electric energy meeting the requirements of a load end; the device group for extracting uranium from seawater utilizes the residual electric energy of the offshore wind farm to extract uranium raw materials from seawater; the marine floating nuclear power station generates power by using the uranium raw material; and the electric energy collecting and dispatching system receives the wind energy of the offshore wind farm and the nuclear energy of the offshore floating nuclear power station and judges whether the wind energy of the offshore wind farm is surplus or not. The invention combines offshore wind energy and small nuclear power stations, realizes mutual supplement of wind energy, electric energy and nuclear energy, and improves the utilization rate of energy and the operation flexibility and reliability of renewable energy power technology.
Description
Technical Field
The invention relates to the technical field of offshore wind power, in particular to an energy source complementation scheme combining a small floating nuclear power station and a large offshore wind power plant.
Background
The maturity of wind power generation technology and the wide sea area space promote the construction of offshore wind power generation. However, the great randomness of the renewable energy represented by wind energy is accompanied, and the rapid development of offshore wind power plants poses a great challenge to the safe and stable operation of power systems. Compared with a land power generation system, offshore wind power has the advantages of small inertia, high regulation speed and the like, and is expected to play a key role in bearing more power system load supply. In order to realize larger-scale offshore wind power integration, the research on a multi-energy complementary scheme for improving the operation flexibility of the offshore wind power integration has important practical significance.
As a technically mature and clean power generation technology, nuclear power is an important means for solving the shortage of electric power and fossil energy. With the rapid development of small modular reactor technology, the large-scale construction of small reactor power stations is realized. Small reactor power plants have a small installed capacity (typically less than 300MW), higher flexibility, reliability and versatility than large nuclear power plants, and are therefore favored by countries throughout the world. The development space of offshore wind power in China is wide, the potential is huge, and the development of ocean economy can be effectively assisted by designing a small reactor power station as a ship floating on the sea surface.
In recent years, the offshore economy has promoted the rapid development of industrial infrastructure on offshore islands, and the scale of offshore wind power bases is gradually expanding. The action scheme of carbon peak reaching before 2030 indicates that the coordination of wind power is promoted to develop rapidly by insisting on the repeated land and sea, the offshore wind power industry chain is perfected, and the construction of an offshore wind power base is encouraged. Advanced reactor type demonstration projects such as modular small reactors, offshore floating reactors and the like are actively promoted, and comprehensive utilization demonstration of nuclear energy is developed. Therefore, offshore wind power is developed and popularized in the future for promoting clean and efficient transformation of energy structures in China. The energy complementary scheme for researching the combination of the small-sized offshore floating nuclear power station and the large-sized offshore wind farm becomes work with epoch significance.
Disclosure of Invention
Aiming at the technical problems, the invention provides a complementary technical scheme of offshore wind power and nuclear power, and specifically the technical scheme of the invention is as follows:
an offshore wind power and nuclear power complementary system comprises:
the offshore wind farm provides electric energy meeting the requirement of a load end;
the device group for extracting uranium from seawater utilizes the residual electric energy of the offshore wind farm to extract uranium raw materials from seawater;
a marine floating nuclear power plant which generates power by using the uranium raw material;
and the electric energy collecting and dispatching system receives the wind energy of the offshore wind farm and the nuclear energy of the offshore floating nuclear power station and judges whether the wind energy of the offshore wind farm is surplus or not.
Optionally, the group of the uranium on the sea devices extracts uranium raw materials from seawater based on a half-wave rectification electrochemical method.
Optionally, the installed capacity of the marine floating nuclear power plant is no more than 300 MW.
The invention also provides an operation method for offshore wind power nuclear power complementation, which comprises the following steps:
collecting operation data of an offshore wind farm;
configuring a marine floating nuclear power station according to the operation data;
extracting uranium raw materials from seawater by utilizing redundant wind energy of an offshore wind power plant;
starting the marine floating nuclear power station to generate power to obtain nuclear energy;
and supplementing offshore wind energy by using the nuclear energy.
Optionally, the method further comprises the step of constructing an offshore wind farm operation model according to the operation data.
Optionally, the building of the offshore wind farm operation model includes obtaining a data driving model of the unit power output system by using a subspace identification method.
Optionally, the configuring of the marine floating nuclear power plant according to the operation data includes obtaining the residual wind power or the scale of electric energy to be supplemented based on the generated power of the marine wind power plant and the electric energy required by the coastal industrial load, and obtaining the number of the marine floating nuclear power plants to be configured by combining with the rated power of the marine floating nuclear power plant.
Optionally, the uranium raw material is extracted from the seawater by a half-wave rectification alternating current electrochemical method.
Optionally, the half-wave rectified ac electrochemical method comprises:
applying a negative-amplitude deflection voltage to make positive and negative ions start to directionally move under the influence of an external electric field, and forming an electric double layer on the surface of the electrode;
forming combination between uranyl ions in the inner layer of the electrode and the surface of the electrode;
the uranium substance is further reduced and becomes neutral uranium molecules by means of electrodeposition;
canceling a bias voltage applied from the outside, attaching the uranyl ions and the electrodeposited uranium molecules on the surface of the electrode, and randomly distributing other ions which are not specifically bound on the surface of the electrode again;
and circularly executing the steps, attaching more uranyl ions and uranium molecules to the surface of the electrode, and continuously depositing to gradually increase the content of the uranium molecules so as to extract the uranium molecules.
Optionally, the electrode is an amidoxime group functionalized carbon electrode.
The invention combines offshore wind energy and small nuclear power plants, utilizes surplus wind energy to extract uranium from seawater, and nuclear power can supplement load requirement when the wind energy is insufficient, thereby realizing mutual supplement of wind energy, electric energy and nuclear energy, and improving the utilization rate of energy and the operation flexibility and reliability of renewable energy power technology. Meanwhile, in order to overcome the defect of uranium extraction by traditional physical and chemical adsorption, the invention adopts a half-wave rectification alternating current electrochemical (HW-ACE) method to extract uranium from seawater, thereby improving the efficiency and the purity of uranium.
Drawings
FIG. 1 is a schematic structural diagram of an offshore wind power and nuclear power complementary system according to an embodiment of the invention;
FIG. 2 is a schematic flow chart of an operation method for offshore wind power nuclear power complementation according to an embodiment of the invention;
fig. 3 is a schematic flow chart of a half-wave rectification alternating current electrochemical (HW-ACE) method for extracting uranium from seawater according to an embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention/utility model better understood, the present invention is further described in detail with reference to the accompanying drawings and the detailed description.
Example 1
As shown in FIG. 1, the invention provides an offshore wind energy nuclear power complementary system, which comprises:
the offshore wind farm provides electric energy meeting the requirement of a load end; compared with a land power generation system, offshore wind power has the advantages of small inertia, high regulation speed and the like, and is expected to play a key role in bearing more power system load supply. And stable energy supply is provided for coastal loads.
The device group for extracting uranium from seawater utilizes the residual electric energy of the offshore wind farm to extract uranium raw materials from seawater; when the power supply power of the offshore wind farm exceeds the requirement of coastal loads, in order to avoid energy waste, the invention provides the redundant electric energy to a seawater uranium extraction device group for extracting uranium raw materials.
A marine floating nuclear power plant which generates power by using the uranium raw material;
and the electric energy collecting and dispatching system receives the wind energy of the offshore wind farm and the nuclear energy of the offshore floating nuclear power station and judges whether the wind energy of the offshore wind farm is surplus or not.
Optionally, the group of the uranium on the sea devices extracts uranium raw materials from seawater based on a half-wave rectification electrochemical method.
Optionally, the installed capacity of the marine floating nuclear power plant is no more than 300 MW.
Example 2
As shown in fig. 2-3, the invention also provides an operation method for offshore wind power nuclear power complementation, which comprises the following steps:
collecting operation data of an offshore wind farm; optionally, for example, the method further comprises the step of constructing an offshore wind farm operation model according to the operation data.
According to the invention, a data driving model of the unit power output system is obtained by taking historical operating data based on an offshore wind farm into consideration, for example, through a subspace identification method, and a subspace identification command of MATLAB can be adopted. The models derived based on different offshore wind farm data may differ.
Configuring a marine floating nuclear power station according to the operation data; optionally, the method includes obtaining wind power surplus capacity or electric energy scale to be supplemented based on the generated power of the offshore wind farm and the electric energy required by the coastal industrial load, and obtaining the number of the offshore floating nuclear power stations to be equipped by combining the rated power of the offshore floating nuclear power stations.
Extracting uranium raw materials from seawater by utilizing redundant wind energy of an offshore wind power plant;
starting the marine floating nuclear power station to generate power to obtain nuclear energy;
and supplementing offshore wind energy by using the nuclear energy.
Optionally, the uranium raw material is extracted from the seawater by a half-wave rectification alternating current electrochemical method. Uranium is a key element of nuclear fuel, and is important for guaranteeing energy requirements and national safety and promoting the development of uranium mining technology. Research shows that the uranium content in seawater is hundreds of times more than that in land, so that uranium extracted from seawater is directly supplied to a small-sized floating offshore nuclear power station to be used, and the feasible scheme for relieving the shortage of uranium resources is provided. The common uranium extraction methods comprise extraction by acid leachate and extraction by alkaline leachate, but the extracted uranium has higher impurity content. In order to overcome the defects of the traditional physical chemical adsorption, in the embodiment, a half-wave rectification alternating current electrochemical (HW-ACE) method is adopted to extract uranium from seawater.
According to the HW-AC method, uranyl ions are combined with the surface of the uranyl ions through an amidoxime group functionalized carbon electrode, an electric field is applied to force the uranium ions, chloride ions, uranium particles and the like in seawater to directionally migrate, and the uranium compounds are induced to be electrodeposited to form charge neutral substances.
Extracting uranium from seawater based on HW-ACE; as shown in fig. 3, the method is mainly divided into 5 steps:
in the step 1, all undesirable adsorption substances such as calcium ions, uranium ions, chloride ions, uranium particles and the like are randomly distributed in the seawater solution.
And step 2, applying a negative-amplitude deflection voltage (the amplitude changes alternately between a negative value and zero and the duration is equal), so that positive and negative ions start to move directionally under the influence of an external electric field, and an electric double layer is formed on the surface of the amidoxime group functionalized electrode. The uranyl ions in the inner layer of the amidoxime electrode can form combination with the surface of the electrode.
In step 3, the uranium species can be further reduced and converted into electrically neutral species, such as uranium molecules, by electrodeposition.
And step 4, canceling a bias voltage applied from the outside, and attaching the uranyl ions and the electrodeposited uranium molecules to the surface of the electrode. Other ions that are not specifically bound are redistributed randomly on the electrode surface.
And 5, circularly executing the previous four steps, wherein more uranyl ions and uranium molecules are attached to the surface of the electrode, and the uranium molecule content is gradually increased by continuous deposition so as to be extracted.
The invention combines offshore wind energy and small nuclear power plants, utilizes surplus wind energy to extract uranium from seawater, and nuclear power can supplement load requirement when the wind energy is insufficient, thereby realizing mutual supplement of wind energy, electric energy and nuclear energy, and improving the utilization rate of energy and the operation flexibility and reliability of renewable energy power technology. Meanwhile, in order to overcome the defect of uranium extraction by traditional physical and chemical adsorption, the invention adopts a half-wave rectification alternating current electrochemical (HW-ACE) method to extract uranium from seawater, thereby improving the efficiency and the purity of uranium.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. An offshore wind power and nuclear power complementary system is characterized by comprising:
the offshore wind farm provides electric energy meeting the requirement of a load end;
the device group for extracting uranium from seawater utilizes the residual electric energy of the offshore wind farm to extract uranium raw materials from seawater;
a marine floating nuclear power plant which generates power by using the uranium raw material;
and the electric energy collecting and dispatching system receives the wind energy of the offshore wind farm and the nuclear energy of the offshore floating nuclear power station and judges whether the wind energy of the offshore wind farm is surplus or not.
2. The offshore wind power and nuclear power complementary system of claim 1, wherein the offshore uranium extraction plant group extracts uranium raw material from seawater based on a half-wave rectification electrochemical ac method.
3. The offshore wind power and nuclear power complementary system of claim 1, wherein the installed capacity of said offshore floating nuclear power plant is no greater than 300 MW.
4. An operation method for offshore wind power nuclear power complementation is characterized by comprising the following steps:
collecting operation data of an offshore wind farm;
configuring a marine floating nuclear power station according to the operation data;
extracting uranium raw materials from seawater by utilizing redundant wind energy of an offshore wind power plant;
starting the marine floating nuclear power station to generate power to obtain nuclear energy;
and supplementing offshore wind energy by using the nuclear energy.
5. The offshore wind power and nuclear power complementary operation method according to claim 4, further comprising the step of constructing an offshore wind farm operation model according to the operation data.
6. The offshore wind power and nuclear power complementation operation method according to claim 5, wherein the building of the offshore wind farm operation model comprises obtaining a data-driven model of a unit power output system by adopting a subspace identification method.
7. The offshore wind power and nuclear power complementary operation method according to claim 4, wherein the configuring of the offshore floating nuclear power plant according to the operation data includes obtaining the residual wind power or the scale of electric energy to be supplemented based on the generated power of the offshore wind farm and the electric energy required by the coastal industrial load, and obtaining the number of the offshore floating nuclear power plants to be equipped by combining the rated power of the offshore floating nuclear power plant.
8. An offshore wind power and nuclear power complementary operation method according to claim 4, characterized in that the extraction of uranium from seawater is performed by a half-wave rectification electrochemical method.
9. An offshore wind power and nuclear power complementary operation method according to claim 8, characterised in that said half-wave rectified AC electrochemical method comprises:
applying a negative-amplitude deflection voltage to make positive and negative ions start to directionally move under the influence of an external electric field, and forming an electric double layer on the surface of the electrode;
forming combination between uranyl ions in the inner layer of the electrode and the surface of the electrode;
the uranium substance is further reduced and becomes neutral uranium molecules by means of electrodeposition;
canceling a bias voltage applied from the outside, attaching the uranyl ions and the electrodeposited uranium molecules on the surface of the electrode, and randomly distributing other ions which are not specifically bound on the surface of the electrode again;
and circularly executing the steps, attaching more uranyl ions and uranium molecules to the surface of the electrode, and continuously depositing to gradually increase the content of the uranium molecules so as to extract the uranium molecules.
10. An offshore wind power and nuclear power complementary operation method according to claim 9, characterised in that said electrode is an amidoxime group functionalised carbon electrode.
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| CN202111365399.XA CN114188972A (en) | 2021-11-17 | 2021-11-17 | Offshore wind power nuclear energy complementary operation system and method |
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| CN202111365399.XA CN114188972A (en) | 2021-11-17 | 2021-11-17 | Offshore wind power nuclear energy complementary operation system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114686701A (en) * | 2022-03-28 | 2022-07-01 | 西安热工研究院有限公司 | System for extracting lithium by utilizing sea wind power seawater and working method |
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- 2021-11-17 CN CN202111365399.XA patent/CN114188972A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114686701A (en) * | 2022-03-28 | 2022-07-01 | 西安热工研究院有限公司 | System for extracting lithium by utilizing sea wind power seawater and working method |
| WO2023185097A1 (en) * | 2022-03-28 | 2023-10-05 | 西安热工研究院有限公司 | System for extracting lithium from seawater by using offshore wind power and working method |
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